an:06264751
Zbl 1282.76037
Nejat, Amir; Abdollahi, Vahid; Vahidkhah, Koohyar
Lattice Boltzmann simulation of non-Newtonian flows past confined cylinders
EN
J. Non-Newton. Fluid Mech. 166, No. 12-13, 689-697 (2011).
0377-0257
2011
j
76A05 76M28
lattice Boltzmann method; non-Newtonian fluids; power-law fluid; confined flow; tandem cylinders; drag coefficient
Summary: A second-order lattice Boltzmann algorithm is used for Power-Law non-Newtonian flow simulation. The shear dependent behavior of the fluid is implemented through calculating the shear locally from the lattice distribution functions. A step by step verification procedure is taken to ensure the accuracy and the physical correctness of the numerical simulation. The flow past a series of tandem arrangement of two cylinders is computed in a confined domain. The effects of Reynolds number, the Power-Law index, and the distance between two cylinders on both the flow field and the drag coefficients of the cylinders are examined in detail.